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Blood from the body is carried into the heart’s right
Inferior vena cava brings blood from the legs and the lower part of the body.
Superior vena cava brings blood from the head, neck, and arms.
When the right atrium fills with blood, it contracts, sending blood through the tricuspid to the right ventricle.atrium by blood vessels called the vena cava.
When the right ventricle fills with blood, it contracts, sending blood to the lungs through blood vessels called the pulmonary arteriesuc.
In the lungs, blood picks up oxygen, and then returns to the heart’s left atrium through blood vessels called the pulmonary veins.
When the left atrium contracts, it sends blood to the left ventricle.
From the left ventricle, blood is pumped out the aorta and through the body.
Circulatory System
- Inferior vena cava brings blood from the legs and the lower part of the body.
- Superior vena cava brings blood from the head, neck, and arms.
When the right atrium fills with blood, it contracts, sending blood through the tricuspid to the right ventricle.atrium by blood vessels called the vena cava.When the right ventricle fills with blood, it contracts, sending blood to the lungs through blood vessels called the pulmonary arteriesuc.
In the lungs, blood picks up oxygen, and then returns to the heart’s left atrium through blood vessels called the pulmonary veins.
When the left atrium contracts, it sends blood to the left ventricle.
From the left ventricle, blood is pumped out the aorta and through the body.